Sustainable Restoration of Degraded Farm Land by the Sheet-Pipe System

Koremasa Tamura, Hiroshi Matsuda, Budi Indra Setiawan and Satyanto Krido Saptomo
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Koremasa Tamura: Kyouwa Corporation, Hagi 758-0061, Japan
Hiroshi Matsuda: Yamaguchi University, Ube 755-8611, Japan
Budi Indra Setiawan: Department of Civil and Environmental Engineering, IPB Kampus Darmaga, IPB University, Bogor 16680, Indonesia
Satyanto Krido Saptomo: Department of Civil and Environmental Engineering, IPB Kampus Darmaga, IPB University, Bogor 16680, Indonesia

Land, 2021, vol. 10, issue 12, 1-19

Abstract: For the sustainable restoration of wet farm land degraded by the climate change-induced rise of ground water level (GWL) and soil salinity etc., the sheet pipe system is one of the most useful technologies which reduces cultivation obstacles due to the poor drainage by controlling the rapid drainage function and enabling farmers to produce profitable crops. This system is characterized mainly as a perforated polyethylene rolled-band sheet 180 mm in width and 1 mm thick which is drawn into the subsurface layer while transforming a drainage pipe with φ = 50 mm. The major advantage of this system is that since the sheet pipe is installed without trenching, the disturbance of land is minimized and the construction period can be shortened to about 1/4 (which reduces the cost approximately by 50%). In this study, by using the sheet pipe installed miniature-type model soil box, the drainage capacity of the sheet pipe was confirmed as being the same as the pipe-shaped standard drainage pipes. Based on the observations of the saturated–unsaturated flow and the maximum lowering rate of GWL was predicted. Finally, at the farm land wherein the free board of the adjoining canal was limited, the effectiveness of the sheet-pipe system was confirmed.

Keywords: sheet-pipe system; subsurface drainage; flow capacity; saturated-unsaturated flow; ground water level (search for similar items in EconPapers)
JEL-codes: Q15 Q2 Q24 Q28 Q5 R14 R52 (search for similar items in EconPapers)
Date: 2021
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